GB502830A - Improvements in or relating to deflecting circuits for cathode ray tubes - Google Patents
Improvements in or relating to deflecting circuits for cathode ray tubesInfo
- Publication number
- GB502830A GB502830A GB26085/37A GB2608537A GB502830A GB 502830 A GB502830 A GB 502830A GB 26085/37 A GB26085/37 A GB 26085/37A GB 2608537 A GB2608537 A GB 2608537A GB 502830 A GB502830 A GB 502830A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuits
- coil
- current
- harmonic
- deflecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000013016 damping Methods 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
- H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
- H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
- H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
- H03K4/28—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device
Landscapes
- Ac-Ac Conversion (AREA)
- Particle Accelerators (AREA)
Abstract
502,830. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 27, 1937, No. 26085. Convention date, Sept. 26, 1936. [Classes 40 (iii) and 40 (v)] To produce a current or voltage of non- sinusoidal waveform in a reactive or capacitative load Lo, a voltage recurring at a given frequency is impressed on the load, which exhibits resonance at the fundamental frequency and at least one harmonic. The deflecting coil Lo of a cathode-ray tube is in the output circuit of an amplifier 9 and is shunted by resonant circuits x, y, z. The input of the amplifier is connected to a generator 1 of impulses which produce a saw-tooth current in the coil. A damping circuit 17 is also shunted across the coil. One of the series resonant circuits is tuned to a frequency between the fundamental frequency and the second harmonic, a second between the second and third harmonics, and the circuits are so tuned relatively to the deflecting coil that the combined circuits exhibit parallel resonance at the fundamental frequency and its second harmonic. The periodic impulses drive the valve 9 from plate-current saturation to plate-current cut-off. The circuit is also used for applying a saw-tooth voltage to deflecting-plates through a step-up transformer, Fig. 3 (not shown). The generator 1 is described in Specification 442,334.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US102670A US2149077A (en) | 1936-09-26 | 1936-09-26 | Deflecting circuits |
Publications (1)
Publication Number | Publication Date |
---|---|
GB502830A true GB502830A (en) | 1939-03-27 |
Family
ID=22291042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26085/37A Expired GB502830A (en) | 1936-09-26 | 1937-09-27 | Improvements in or relating to deflecting circuits for cathode ray tubes |
Country Status (2)
Country | Link |
---|---|
US (1) | US2149077A (en) |
GB (1) | GB502830A (en) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2629049A (en) * | 1942-03-02 | 1953-02-17 | John M Miller | Filter |
US2579525A (en) * | 1942-06-19 | 1951-12-25 | Arthur A Varela | Rectangular and saw-tooth impulse generator |
GB565099A (en) * | 1943-03-17 | 1944-10-26 | Bertram Morton Hadfield | Improvements in or relating to alternating current generators whose frequency is proportional to and controlled by a direct current |
US2465407A (en) * | 1943-03-30 | 1949-03-29 | Arthur A Varela | Rectangular wave impulse generator |
US2495780A (en) * | 1943-04-02 | 1950-01-31 | Sperry Corp | Damped shock excited variable width pulse gate generator |
US2461321A (en) * | 1943-06-24 | 1949-02-08 | Ernst A Guillemin | Production of electric pulses |
US2431952A (en) * | 1944-06-07 | 1947-12-02 | Gen Electric | Pulse generating circuit |
US2460601A (en) * | 1945-01-18 | 1949-02-01 | Rca Corp | Cathode-ray tube deflecting system |
US2498711A (en) * | 1945-04-02 | 1950-02-28 | Standard Telephones Cables Ltd | High-frequency amplifier |
US2469977A (en) * | 1945-05-12 | 1949-05-10 | Bell Telephone Labor Inc | Pulser circuit |
US2449969A (en) * | 1945-05-29 | 1948-09-28 | Rca Corp | Compensating device |
US2499080A (en) * | 1946-12-26 | 1950-02-28 | Rca Corp | Cathode-ray beam deflection circuit |
US2508926A (en) * | 1947-08-28 | 1950-05-23 | Rca Corp | Cathode-ray beam deflection circuit |
US2565392A (en) * | 1949-04-16 | 1951-08-21 | Tele Tone Radio Corp | Horizontal deflection circuit |
US2790932A (en) * | 1949-05-19 | 1957-04-30 | Rca Corp | Cathode ray tube deflection yoke interference elimination |
US2543720A (en) * | 1949-08-10 | 1951-02-27 | Rca Corp | Electromagnetic deflection circuit |
US2621302A (en) * | 1949-08-31 | 1952-12-09 | Rca Corp | Band pass voltage multiplier network for pulsed power supplies |
US2637832A (en) * | 1949-11-29 | 1953-05-05 | Rca Corp | Centering circuit for cathode-ray tubes |
US2608672A (en) * | 1950-01-20 | 1952-08-26 | Westinghouse Electric Corp | Cathode-ray tube circuit |
US2708728A (en) * | 1950-09-28 | 1955-05-17 | Du Mont Allen B Lab Inc | Cathode-ray deflection circuit |
US2760109A (en) * | 1952-12-26 | 1956-08-21 | Rca Corp | Kinescope deflection circuits |
US2916665A (en) * | 1955-10-24 | 1959-12-08 | Motorola Inc | Sawtooth current generator |
US2928999A (en) * | 1957-04-01 | 1960-03-15 | Monogram Prec Ind Inc | Square current wave generator for inductive circuits |
US3241051A (en) * | 1961-04-14 | 1966-03-15 | Philips Corp | Deflection transformer system for television receivers |
US3461372A (en) * | 1965-01-22 | 1969-08-12 | Int Standard Electric Corp | D.c. to a.c. power converter |
EP3968737A1 (en) * | 2020-09-14 | 2022-03-16 | Koninklijke Philips N.V. | Voltage switching circuitry for an x-ray tube |
-
1936
- 1936-09-26 US US102670A patent/US2149077A/en not_active Expired - Lifetime
-
1937
- 1937-09-27 GB GB26085/37A patent/GB502830A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2149077A (en) | 1939-02-28 |
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